Basis Of Presentation And Significant Accounting Policies - Dreamcatcher (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 29, 2014	Jun. 30, 2015	Jun. 29, 2014	Dec. 28, 2014
Variable Interest Entity [Line Items]
Operating revenues	$ 501,524	$ 474,979	$ 974,261	$ 921,081
Operating profit	19,784	32,193	80,719	82,453
Property, plant and equipment, net	853,750		853,750		$ 850,597
Broadcast rights	148,426		148,426		157,014
Other intangible assets, net	2,342,889		2,342,889		2,397,794
Other assets	172,914		172,914		194,899
Total Assets	10,247,416		10,247,416		11,396,455
Contracts payable for broadcast rights	148,534		148,534		178,685
Long-term debt	3,465,776		3,465,776		3,490,897
Other obligations	65,705		65,705		64,917
Dreamcatcher | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Guaranteed minimum annual cash flows to Dreamcatcher					200
Operating revenues	17,000	17,000	32,000	32,000
Operating profit	5,000	$ 4,000	7,000	$ 6,000
Property, plant and equipment, net	684		684		999
Broadcast rights	917		917		2,869
Other intangible assets, net	98,233		98,233		103,500
Other assets	193		193		124
Total Assets	100,027		100,027		107,492
Debt due within one year	4,034		4,034		4,034
Contracts payable for broadcast rights	1,208		1,208		6,552
Long-term debt	16,850		16,850		19,880
Other obligations	67		67		157
Total Liabilities	$ 22,159		$ 22,159		$ 30,623